Kate and Pippa Middleton and other royally cute celebrity sibs

Julie Sprankles is a freelance writer living in the storied city of Charleston, SC. When she isn't slinging sass for SheKnows, she enjoys watching campy SyFy creature features (Pirahnaconda, anyone?), trolling the internet for dance work...

Sis Bliss

While the real action at Wimbledon was on the court, famous fans Kate and Pippa Middleton got all the love. Seated in the royal box, the siblings couldn't help but court attention for their girls' day out. Take a look at the other celebrity sisters we can't keep our eyes off of.

Kate and Pippa Middleton

When the prince is away, the duchess will play — or at least watch others do so. On July 8, Duchess Kate took in the Wimbledon finals, where she and sis Pippa watched Roger Federer pull out the win against Andy Murray. The brunette beauties were caught on camera giggling, leaning in to share secrets and looking every bit the besties they are. Whether the two are hitting the slopes together in France or catching rays in Mustique, Kate and Pippa always seem to enjoy holding court with each other.

Image courtesy of WENN.com

Tia Mowry-Hardrict and Tamera Mowry-Housley

After shooting to fame on the super successful Sister, Sister series, identical twins Tia and Tamera Mowry branched off to pursue solo careers. Happily, the ladies have come back together for the Style Network's hit series Tia & Tamera. As infectiously bubbly as ever, the titular twosome tackle careers as working actresses with families. Both are married and constantly cooing over Tia's baby boy Cree, who will soon have to share attention with a cousin rumored to arrive in November.

Image courtesy of Nikki Nelson/WENN.com

Zooey and Emily Deschanel

As star of the crime-stopping caper series Bones , Emily Deschanel has been winning us over for seven seasons as the brilliant but socially awkward Dr. Temperance Brennan. Her little sister, Zooey, was likewise wowing us with quirky — and scene-stealing — performances in movies like Elf, Failure to Launch and 500 Days of Summer. So what happens when the two share the screen? Media magic. Zooey's cameo on Bones' 2009 Christmas episode marked one of the most memorable the show has ever had. We couldn't be happier to see Zooey now racking up accolades as kooky 20-something Jess Day in her own hit series, New Girl.

Image courtesy of Adriana M. Barraza/WENN.com

Kendall and Kylie Jenner

They've caught some flak for sauntering around in skimpy bikinis, but we're inclined to cut the youngest members of the Kardashian clan some slack (after all, research is still pending, but exhibitionism may be genetic in that fam). Sure, they could stand to show a little less skin, but it seems like these girls have good heads on their shoulders — they're just getting overshadowed by other parts of their anatomy. On Keeping Up with the Kardashians, Kendall and Kylie come off as privileged, yes, but also surprisingly sweet and down-to-earth.

Image courtesy of Daniel Tanner/WENN.com

Mary-Kate, Ashley and Elizabeth Olsen

Who knew petite powerhouses Mary-Kate and Ashley Olsen had a little sister who could actually act? While Mary-Kate and Ashley were cloyingly cute on Full House playing precocious toddler Michelle, they've since found much more success outside the realm of acting — namely, in fashion. Their younger sib, Elizabeth, shares the natural beauty of her twin sisters, but earned her place in Hollywood on pure talent... her breakout role in the movie Martha Marcy May Marlene wowed critics (and us!).